Answer:
tRNA and mRNA can leave the nucleus.
Explanation:
tRNA, when mature and correct, can leave the nucleus and enter the cytoplasm. mRNA can leave the nucleus through pores in the nuclear membrane. However, DNA cannot leave the nucleus, it has to be transcribed into RNA.
Excitation- contraction coupling is the sequence of processes that links the action potential to contraction. threshold period of an action potential. sliding of thin filaments past thick filaments during muscle fiber contraction. refractory period of an action potential. transfer of ACh into the synaptic cleft.
Answer:
The correct answer is - sequence of processes that links the action potential to contraction.
Explanation:
The depolarization of the cardiomyocyte plasma membrane is binded to the calcium ions that release from the sarcoplasmic reticulum to stimulates sarcomeric actomyosin cross-bridge to the formation and the generation of a contractile force, known as Excitation- contraction coupling.
Briefly explain why exponential growth within a population cannot last forever.
Answer:
It will eventually become unsustainable because of factors like food, water, space, etc.
Explanation:
exponential growth may occur in environment where there are few individuals and plentiful resources open the number of individual becomes large enough resources will speed depleting slowing the growth rate
The term bycatch or incidental catch refers to ________. non-target species that are caught along with commercial species species harvested for industrial purposes species raised in aquaculture settings species caught as part of traditional fisheries krill and other shellfish
Answer:
The correct answer is ''non-target species that are caught along with commercial species''
Explanation:
Bycatch refers to bycatch organisms that are not targeted by the fishery. Occurs inadvertently in fishing gear, all fisheries have some unwanted bycatch. Species with little or no commercial value, juvenile stages, or discarded gravid females of the target species (s) are generally included here. These incidental catches can be marginal when fishing is carried out with selective or very substantial gear, when the gear used indiscriminately catches everything that comes along its route. In marine fisheries, it causes injury or death to mammals, birds, turtles, fish, elasmobranchs, and invertebrates.
Blood pH is sensed by cells known as chemoreceptors that send information about blood pH to the brain via cranial nerve 9 and 10. In order to correct changes in pH, the ventral respiratory group sends signals to the diaphragm to adjust its rate of contraction. These signals are sent via the phrenic nerve. What serves as the effector in this example
Answer:
The correct answer is - The diaphragm.
Explanation:
If there is a response to stimulation if a bodily tissue or organ becomes active and those of the autonomic system involves two neurons, not single neurons like motor pathways of the somatic nervous system.
In this case, the diaphragm is the organ that gets the signal in order to correct or adjust the rate of contraction in response to changes in pH level, Hence, the diaphragm is the organ that is the effector in this case.
How can evidence from an experiment be explained in relationship to the hypothesis?
• as a prediction
• as a question
• as an inference
• as a conclusion
Answer:
As a conclusion
Explanation:
A hypothesis is a tentative statement about the relationship between two or more variables. It is a specific, testable prediction about what you expect to happen in a study. A hypothesis is a prediction based on the theory being tested. The evidence can support the Hypothesis or invalidate the Hypothesis.
Answer:
A conclusion
Explanation:
It sums up everything that you did
Which of the following is a start codon?
A.UAG
B.AUG
C.UAA
D.UGA
Answer:
AUG
Explanation:
you can use a codon chart to help or double check.
B) you can use a software to check
The CEII THEORY STATES Thay CElls
Answer:
The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life comes from preexisting life.
Explanation:
your mom
What is the end product of glycolysis ?
Answer:
pyruvate
Explanation:
Explanation:
The final product of glycolysis is pyruvate in aerobic settings and lactate in anaerobic conditions. Pyruvate enters the Krebs cycle for further energy production.
Modern plant-breeding techniques (artificial selection in action) have reduced genetic variability in many of our most commercially valuable plants. To most people, that would generate a shrug. However, a biology student that has studied evolution understands the problem with this. Briefly explain why there is an issue with this.
Answer:
There is an issue with the artificial selection.
Explanation:
There is an issue with this artificial selection because the genetic variability is reduced when we do again and again the artificial selection. In the artificial selection, the selected genes are combined with the one another and does not allow natural fusion or combination of genes that is responsible for the genetic variability in the organisms so that's why we can say that this artificial selection is an issue that reduce genetic variability.
Starting with pyruvate to make acetyl-CoA and continuing into the citric acid cycle, and oxidative phosphorylation, how many ATP can be made from 1 molecule of pyruvate
Answer:
The correct answer is - 15 ATPs.
Explanation:
Cellular respiration (aerobic) is the process that involves glycolysis, oxidative decarboxylation, citric acid cycle and oxidative phosphorylation or ETS to breakdown one molecule of glucose in order to generate energy in ATPs. Pyrivate is the end product of glycolysis and it is go to form acetyl CoA.
One molecule of pyruvate genrates 1 molecule of FADH2, four molecules of NADH, and 1 molecule of ATP during oxidative decarboxylation and citric acd cycle. During the oxidation in the electron transport system there is 4 molecules of NADH2, 1 molecule of FADH2, and 12 (4×3) ATP molecules, respectively by oxidation in the electron transport system (ETS).
Thus, there would be 15 molecules of ATPs produce by one molecule of pyruvate.
You have been asked to help a top nutrition researcher conduct human experiments on vitamin C. As the subjects walk into the laboratory, you distribute all the vitamin C pill bottles to the girls and all the placebo pill bottles to the boys. The researcher instantly informs you that there are two errors in your research practice. What steps should you have done differently?
a. given all the boys the vitamin C and the girls the placebo, and told them what they were getting
b. Distributed the bottles randomly, randomized the subjects, and told them what they were getting.
c. Told the subjects which group they were in, and prevented yourself from knowing the contents of the pill bottles.
d. Prevented yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects.
Answer:
Option D
Explanation:
Prevented yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects.
The meaning of the term ionic bond
Answer:
A type of Chemical Bonding that includes electrostatic attraction between opposite ions.
Explanation:
Ionic bonds are the attraction of two opposite ions.
An ion is an atom that has a net electric charge.
As an adaptive immune response progresses, the production of variant antibodies that compete more effectively for antigen occurs, and B cells producing these antibodies are preferentially selected on the basis of their improved binding to antigen. This phenomenon is referred to as _______.
Answer:
a
Explanation:
Many animals have a mutually-beneficial, symbiotic relationship with bacteria that reside in their guts. To study the effects of these relationships in more detail, research organisms such as fish and mice have been raised under germ-free conditions. What important process do you predict is compromised in germ-free mice
Answer:
Explanation:
Quá trình tiêu hoá và hấp thụ chất dinh dưỡng
How do feedback mechanisms help maintain homeostasis?
it involves negative feedback loop
Explanation:
the loop allows living organisms to maintain homeostasis
After the completion of the polypeptide synthesis, the protein will be in its
structure.
A.primary
B.secondary
C.tertiary
D.quaternary
Answer:
B. secondary
Explanation:
In garden peas, the allele for tall plants is dominant over the allele for short plants. Imagine that a true-breeding tall plant is crossed with a short plant. Then one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about how many should be tall
Answer:
10
Explanation:
The allele for tall plants is dominant over the allele for short plants. A true-breeding tall plant is crossed with a short plant, and one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about 10 and should be tall.
Experiment 1:
A student tested to see if ultraviolet light made plants grow
more slowly. She followed a logical method and used
control and experimental groups. She repeated her
experiment several times, and each time found that plants
grow slightly slower with ultraviolet light.
Experiment 2:
A student tested to see if a new fertilizer made roses
bloom earlier. She used a logical method and control and
experimental groups. She performed one experiment and
found that the fertilizer had no effect.
Which experiment most likely has greater reliability, and why?
thank
Answer:
Experiment 1
Explanation:
This is because she repeated her experiment several times and not just one time.
List any ten environmental issues of Nepal and write short Introduction about them
Answer:
Major issue
Air pollution. The death rate from both indoor and outdoor air pollutants was 133.3 per 100,000 populations(2017) which is the second-highest death rate after due to Cardiovascular diseases in Nepal. ...
Unsafe water. ...
Unsafe hygiene. ...
Water and air pollution. ...
Deforestation. ...
Overpopulation.
All of the following statements are true concerning skeletal muscles EXCEPT: A. Skeletal muscles control involuntary body functions. B. Skeletal muscles are controlled by the central nervous system. C. Skeletal muscles are used to move large body parts. D. Skeletal muscles are attached to the bones. Please select the best answer from the choices provided. A B C D
Answer:
A. Skeletal muscles control involuntary body functions.
Explanation:
Skeletal muscle is also known as voluntary muscle and it can be defined as a type of muscle connected with the skeleton by tendons, so as to form a mechanical system that enables the movement of the limbs and other body parts with respect to another.
Generally, skeletal muscles are only found in vertebrates.
Skeletal muscles doesn't control involuntary body functions, instead it controls voluntary body functions such as the movement of body parts.
In conclusion, an example of a muscle responsible for controlling involuntary body functions is cardiac muscle.
Answer: the answer is a
Explanation:
The top one is correcto
A sample of gold has a mass of 38,6 grams and a volume of 2 cm What is the density of gold?
plz help me
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In mammalian eggs, the receptors for sperm are found in the A) fertilization membrane. B) zona pellucida. C) cytosol of the egg. D) nucleus of the egg. E) mitochondria of the egg.
Answer:
zona pellucida
There are a few points in the human genome where each individual differs. What is the name of those points?
Explanation:
Every human genome is different because of mutations—"mistakes" that occur occasionally in a DNA sequence. When a cell divides in two, it makes a copy of its genome, then parcels out one copy to each of the two new cells. ... These genome variations are uniquely yours.The point at which every individual differs is called the DNA which is unique to each individual.
What is DNA?The term DNA has to do with the genetic material that is found in the genes. It is an acronym that means deoxyribonucleic acid. It is peculiar to each individual.
Hence, the point at which every individual differs is called the DNA which is unique to each individual.
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LOS ALIMENTOS Q EVITAN Q NOS ENFERMEMOS, CONTIENEN: A) LECHE B) ACEITE C) CARBOHIDRATOS D) GLÚCIDOS E) NARANJA
Respuesta:
La respuesta correcta es: E) naranja.
Explicación:
La vitamina C está presente en los cítricos, como la naranja, el limón y el pomelo. La naranja es una fruta muy rica en vitamina C, de hecho, basta con una al día para cumplir con los requerimientos diarios de esta importantísima vitamina.
Si bien el consumo de vitamina C no cura enfermedades, se probó que tiene un papel fundamental a la hora de reforzar nuestro sistema inmunitario, que es aquel que nos protege de los diferentes microorganismos que nos pueden enfermar.
Además de su rol importante en fortalecer nuestras defensas inmunitarias, el consumo diario de cítricos contribuye a prevenir el cáncer de colon y a regenerar los cartílagos.
Where is amyglada located in a brain ? How does it function ?
Short Answer: The amygdala is located in the brain and its functions are related to emotional learning.
Explanation
The amygdala is a brain structure located in the temporal lobe of the brain. Its functions are related to the emotional system of the brain, and memory. In addition, the amygdala has been shown to influence the emotional learning process. The amygdala is mainly responsible for the formation and storage of memories associated with emotional events, so external sensory stimuli reach the basolateral group of the amygdala, where associations are formed with memories of the stimulus (mainly related to fear).
Which actions could be categorized in the “aerobic” section of the Venn diagram?
Check all that apply.
consists of three stages
yields 36 ATP molecules
does not require oxygen
produces lactic acid
starts process with a glucose molecule
Identify the stage of cellular respiration in which each of the following takes place.
Produces 32 ATP molecules
Creates four ATP molecules, but then gains overall only two
Gives off carbon dioxide
Gives off water
Produces two ATP molecules
Answer:
start process with gulcose
Explanation:
simple
During a stay in the hospital, an accident victim develops symptoms of bacteremia. A blood sample shows the presence of Gram-positive cocci in pairs. Lab tests determine that the bacteria are non-hemolytic and bile salt tolerant. The bacteremia is likely due to
Answer:
Enterococcus.
Explanation:
Enterococcus is reason for nosocomial infection with predilection for older patients with multiple comorbidities. It is usually caused by longer stay in hospital. The infections may include urinary tract infections, wound infection and intra abdomen or pelvic infections.
Emulsifiers are Multiple Choice molecules with two nonpolar ends that can be used to disperse lipids into polar liquids such as water. molecules with a polar end and a nonpolar end that can be used to disperse lipids into polar liquids such as water. molecules with two polar ends that can be used to disperse lipids into polar liquids such as water. proteins that transport nonpolar substances in the bloodstream. proteins that transport polar substances in the bloodstream.
Answer:
molecules with a polar end and a nonpolar end that can be used to disperse lipids into polar liquids such as water.
Explanation:
The process of emulsification is very important in science. An emulsifier is a substance that is used to disperse hydrophobic substances in a polar substance such as water.
An emulsifier has a hydrophillic head and a hydrophobic tail. The hydrophillic head dissolves in a polar substance such as water while the hydrophobic tail dissolves in the lipid thereby dispersing the lipid in water.
What is the function of the Calvin cycle?
it generates NADH for use in mitochondrial ATP production
it produces NAD+ from NADH to keep glycolysis going when oxygen is absent
it fixes atmospheric carbon dioxide gas
it creates a proton gradient
Answer:
it generates NADH for use in mitochondrial ATP production
The function of Calvin cycle is to generate NADH for use in the mitochondrial ATP production in the process of cellular respiration. Thus, the correct option is A.
What is Calvin cycle?
Calvin cycle is also known as the C3 cycle or citric acid cycle. It is the cycle of chemical reactions where the carbon atom from the carbon cycle is fixed into various different molecules of sugar. It occurs in the chloroplast of the plant cell.
Calvin cycle is an important mechanism as it involves performing chemical reactions by plants to fix carbon from CO₂ into the three-carbon sugars (glyceraldehyde). Afterward, the plants and other creatures can transform these three-carbon compounds into amino acids, nucleotides, and other more complex sugars like starches. Calvin cycle generates NADH for use in the mitochondrial ATP production.
Therefore, the correct option is A.
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